Half to thomas reynolds



(No Model.) 3 Sheets-Sheet 1.

J. H. SGHNARRENBERGER.

ADDING MACHINE.

N0. 891,430.. Patented Oct. 23, 1888.

UV VE ./V TOR,

WITNESSES,

MAM

(No Model.) 3 Sheets-Sheet 2.

J. H. SGHNABRENBERGER. ADDING MACHINE.-

No. 391,430. Patented Oct. 28, 1888.

IIHMIIIIWHIWIHIIW (No Model.) 3 SheetsSheet 3.

J. H. SOHNARRENBERGER.

ADDING MACHINE.

N0. 391,4 0. Patented Oct. 28, 1888.

El /3Y7 95 4 WY 101. 04 Z #136" i 127 WITNESSES,

N, PETERS. HMO-Lithographer, Wa'shingicm D- Q UNITED STATES ParanaGFIELD, OHIO, ASSIGX OLDS, or SAME PLACE.

OR OF OXE- AZBBiNG-MACHiNE.

BPEGIFICATION forming Application filed March 21, 1833.

part of Letters Patent No. 391,480, dated ctcber 23,1888. Serial No.258,009. (Yo model.)

T0 aZZ whom, it may concern:

Be it known that I, J A0013 H. SOHNARREN- BERGER, a citizen of theUnited States, residing at Springfield, in the county of Clark and Stateof Ohio, have invented certain new and useful Improvements inAdding-Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new useful improvements inadding-machines.

The object of the invention is to mechanically add together figures,whether the figures be arranged in single columns or in numerous 1:5columns,in which latter instance all of the columns are added at thesame time, so that the result will show the footing of all the columnsjust as if they had been added up one column at a time, as is usuallydone.

Another object of my invention is to ar a key-board so that the figuresto be add be read oif or dictated nipulate the machine and range ed canand the operator maby actuating the keyboard and add the figurestogether after the manner of printing words on the well-knowntype-writing machines.

In the accompanying drawings, forming a part of this specification, andon which like reference-letters indicate corresponding parts,

Figure 1 represents a plan view of my improved adding-machine with manyof the keys omitted; Fig. 2, plans and elevations of several of theshafts employed in constructing the machine; Fig. 3, a plan view of arock-sl1aft and a series of locking-pawls, with one pawl in detailelevation; Fig. 4, a side elevation of my improved machine; Fig. 5, aside elevation of a portion of one of the adding-disks and a stationarycam-plate, showing also one of the ac engaging-pawls; Fig. 6, a detailsectional view on the line 6 6 of Fig. 5, looking in the direction ofthe arrow; Fig. 7, a detail perspective view of parts shown in Fig. 5;Fig. 8, a diagram of an example containing five orders of figures; Fig.9, a diagram of an example con taining one order of figures; Fig. 10, anenlarged detail View of portions of several of the adding-disks, showingthem adjusted at zero, and of the sight-plate; and Fig. 11, a detailview of the locking-arm.

A designates a platform or base, and B the main frame of the machine,constructed, preferably, of cast-iron and secured to said base.

In this frame is mounted an arbor, 0, upon which are independentlymounted a series of adding-disks, D, and also a like series of fixedcam-disks, E. The disks D are arranged to rotate on the arbor and thedisks E to be held against rotation by the arbor, which itself isnon-rotating. The disks D, as already inti- 6o mated, I term theadding-disks," and upon their periphery are placed the numerals 0 to 9,running through the series of 0 l 2 3 5 6 7 8 9 and terminating with 0.These figures I term groups, of which groups there are ten upon theperiphery of each disk. One side of each adding-disk is provided withone hundred ratchet or cscapement teeth, G, by which the disks arerotated in the manner presently to be described, and by which they areheld against accidental rotation by the series of the springlocking-pawls H. (Seen in Figs. 3 and 4.) Each adding-disk is also provided with a pivoted engagingdog, I, normally drawn at its free endtoward the disk 7 byaspiral or otherspring, J. (SeeFig. 6.) The dog isprovided with an antifriction roller,

K, which runs upon the surface of the camdisk E nearest to theadding-disk which sup ports the dog I. When this roller reaches ces L ofthe cam-disk,

one of the cam-surfz. of which surfaces there are ten to each disk, anieand projects it rotates out upon the s the engagingdog laterally untilits end M engages the teeth G of the addingdisk ad- 8 The result of thisis to jacent to such end.

interlock or positively engage one adding-disk with the other-that is tosay, to engage the adding-disk first to the left with the adding diskwhich carries the dog, which is thus pro- 0 s engagement will jected.The purpose of thi It should be observed at presently appear. thispointthat, there being but ten of the camupon each cam-disk E, and theresurfaces L being as much space between the vertical terminations of anytwo of said eamsurfaces as there is distance between ten of the teeth Gon the adding-disks, an engaging-dog, I, will be projected but once atevery ten movements of this adding-disk or, in other words, will be 100projected only when 0 of its disk reaches the point where the figuresare read in adding,

and therefore that one addingdisk will only project its dog intoengagement with the next adding-disk and move the latter when the formeris passing from the numeral 9 to O at the sight-slot of the plate 6.

O designates a shaft mounted in the main frame 13, to which shaft thespring-pawls H are secured. This shaft isheld so that the pawls are heldto engagement with the teeth G by an arm, P, having a stud, Q, whichengages the frame, as seen in Fig. 4. When the pawls H are to be thrownout of the said teeth, the arm P is manipulated. The function of thepawls H, as already intimated, is that of holding the adding-disksagainst accidental rotation and against rotating contact of theactuating-pawl, presently to be described, with the teeth G. The objectin disengaging the pawls H is to admit of resetting all the adding-disksto 0 after using the device.

It designates a series of key-levers pivoted to the rear portion of themachine on a shaft, It, and each surmounted by nine keys, S, which aremounted in the guidesTand provided with shoulders V. The position of thelatter with respect to the guides is such that a depression of a keywill move a lever, B, a sufficient distance downward to rotate anadding-disk a distance equal to as many teeth G as the key designates.Thus the distance between the shoulder V and the guide T of the keynumbered 1 is much shorter than the distance between the guide T and theshoulder V of key numbered 9, and when the latter is depressed the diskis moved the distance of nine of such teeth.

W designates pivoted levers, one end of one of which is connected by alink, X, with one of the levers R, and the other end of which carries anactuating-pawl, Y, held in engagement with the teeth G of a disk, D, bya suitable spring, Z, connected to it and to said lever WV. This leveris also connected to the frame by a spring connecting-link, a, by thecontraction of which the lever B is returned to normal position. Thekeys are held in and returned to normal position by the coil spring 22,fitted round the keys and engaging pins 0 and resting upon a sheet, d,secured to the frame of the machine in any convenient way.

It will be understood that there are as many of the devices W, .X, Y, Z,a, and It as there are sets of keys running from 1 to 9, as seenin Fig.1.

e designates a slotted strip of metal extending across the peripheriesor faces of the disks D and constituting asight-plate.

Before computing a given example the lockingdetents H are thrown out ofengagement with the teeth G and all of the adding-disks set by hand topresent 0 in the slot of the side plate.

I will now give an example of the operation of my improved instrument,referring to diaby the frictional gram, Fig. 8, in the drawings, inwhich $101.01: are to be added to $95.00. The operator would strike keymarked 4 at the extreme right hand, which would presentetin the slot ofthe sightplate by moving the disk from 0 through four of the teeth G. 0being the next figure, and there being no key designated or marked 0, hewould not disturb the second disk to the left. In the third or hundredsorder he would strike key marked 1, which would move the disk one spaceand present 1 instead of 0 in the slot. The next figure being an 0, hewould not disturb the fourth or thousands disk, for the above reason.The next figure being 1, he would strike key marked 1 in the fifth orderand move that disk one space and present 1 in the slot. The figureswould then read $101.01. Going on up the column in the example, he wouldobserve 5. The operator would then depress key marked 5 in the thirdorder, which would move the third disk five spaces, which, added to theone space already moved from 0, would present 6 in the slot. The nextkey to be depressed would be that marked 9 in the fourth order. This theoperator would depress and move the fourth disk from O to 9.Thus$196.04, the sum of $101.04 and $95.00, is shown in the slot.

Another example is as follows, being that shown in diagram 9: Key marked1 is depressed, which will move the units-adding disk one notch. Keymarked 2 is then depressed, which will move said disk two notchesfarther, making three notches in all. The units-key marked 3 is thendepressed, which will move the disk three notches farther, makin g sixin all, and,finally, the units key marked at is depressed, which willmove the disk four notches farther, making ten in all, which will bringO to view through said slot. As 9 passes from the slot and 0 appearstherein, the engaging-dog I is projected outward by means of the cam Lon the disk E into the teeth G of the next disk to the left, and saiddisk is moved one notch, which will bring the numeral 1 in said slot.Thus 1 and 0 appear, designating 10, the sum or result of the saidexample,

It will be observed that the number of adding-disks illustrated willpermit the adding of figures the sum of which will amount to$999,999.99. This, however, is not the limit, as additional disks may beadded.

I do not wish to be understood as confining myself to the precisearrangement shown and described, nor to the detail illustrated and setforth, inasmuch as various changes in these respects will readilysuggest themselves to the mechanic or builder of this machine.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

In an addingmachine, the combination, with an arbor, a series ofindependent rotatable disks mounted thereon and respectively bearinggroups of figures from 0 to 9,inelusive, on their peripheries, andprovided each with ment with the teeth of the next disk to move anannular row of teeth on one side, save the last disk to the left, with adog pivoted to the side opposite the teeth, and a fixed cam-disk betweeneach two of the rotatable disks, and mounted on said arbor, thecam-surfaces of said disks being opposite the numerals 0 and 9 to throwthe dog of one disk into engage it from O to 1 as the first-named diskpasses from 9 to O, of a pivoted key-lever for each disk, at pivotedactuating-lever connected to lookingpawls engaging the teeth of thedisks,

it, and an actuating-paw] carried by the actuating-lever to rotate thedisk by engaging the teeth thereof, a spring to return tholzey andaetuating-lever'to the normal position, and keys for each key-leveragreeing with the groups of figures on the respective disks, and

and adapted to allow the disks to rotate in one direction but not in theother.

In testimony wh ereofI affix my signature in presence of two witnesses.

JACOB H. SGHNARRENBERGER. Witnesses:

J. \V. ALLEN, Jas. H. MAIIAN.

